I have recently got my Japanese 1.5 PSP and want to connect to a) wirelessly play against another PSP (my mates just got one), and b) connect to the internet (I have a wireless router) and play against people there. Is this possible with a Japanese PSP? Do I need some sort of code to allow this to happen from Sony? If I am able to wirelessly play with my mate does he need to have the same firmware as me? Thanks for your help.